Cutting – Rotatable disc tool pair or tool and carrier – With means to permit replacement of tool
Patent
1990-05-29
1991-10-22
Yost, Frank T.
Cutting
Rotatable disc tool pair or tool and carrier
With means to permit replacement of tool
83482, 83496, 83500, 83698, B26D 124, B26D 726
Patent
active
050584758
ABSTRACT:
A web slitting machine for cutting a web or roll of material includes an upper carriage assembly joined to a lower blade holder assembly by a selectively removable guide key which is milled to provide a predetermined cant angle for the blade. The blade is lowered into position by a piston which is rectangular and includes a torsion-resisting sleeve to prevent rotation of the piston about its vertical axis. A pneumatic control provides a plurality of control modes whereby the blade may be raised and lowered with or without locking the upper carriage assembly to its transverse bar and vice-versa. A unique side shift adjustment is provided whereby the blade may be shifted to a half-stroke position and the upper carriage locked when the blade is positioned against a lower knife. This ensures that the pressure of the blade against the knife is the pressure exerted at the mid point of the stroke. A parallelogram linkage biased by a spring provides a shock absorber for maintaining blade/knife contact in the presence of webs moving at high speed.
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Biswas Borendra K.
Miller William R.
Schable Reinhold A.
Tidland John W.
Vander Bom Casey M.
Rada Rinaldi
Tidland Corporation
Yost Frank T.
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